AlexRivera

Lead engineer on the ledger consistency team. Migrated the high-throughput double-entry write path off a 9-year-old monolith without dropping a single dollar of in-flight volume.

• Owned the multi-region failover rewrite; cut recovery time from 14 minutes to 38 seconds.
• Designed the idempotency token model now used by 200+ downstream services.
• Mentored 6 senior engineers; promoted 3 of them in two cycles.

Early platform hire. Built the real-time sync engine that backs Linear's offline-first product surface.

• Shipped the CRDT-based document model in the first quarter; it still backs Linear Docs today.
• Wrote the issue search engine; cut p95 query latency from 480ms to 60ms.
• Hired and onboarded the platform team's first four engineers.

Indexing pipeline team. Owned the freshness path for news and live events.

• Cut median news indexing latency by 4.2x with a new event-driven pull architecture.
• Launched the live-events indexer used during the 2018 World Cup and 2019 elections.
• Authored two internal design docs that became required reading for the team.

Full-stack engineer building bespoke products for media and finance clients.

• Shipped the Bloomberg newsroom CMS; still in production a decade later.
• Built the first three internal React-Native apps for a top-five US bank.